The Fort in the Wilderness by Edward Stratemeyer

Dave's surmise was correct, it was indeed Daddy Farker's cabin that was in flames, and the old settler himself lay on the cabin floor, tomahawked and scalped. But he had sold his life dearly, for close at hand lay the bodies of two Indians. The grandson, a boy of nine, had fled to the woods, and now the red men were doing their best to find him.

"You are certain it is the cabin? " queried Rodney.